[nickez]

We just have to do what the phone manufacturers did for the mobile phone connectivity. GSM was a huge hit thanks to interoperability.

[nimrody]

It was but then deteriorated into a big patent war with every company trying to shove its proprietary patents into the next cellular standard.

So while everyone can implement the standard, very few can do this profitably (In practice, Qualcomm, Mediatek and to some extent Samsung)